Android best music app is King Player PRO .its very easy to use app for all android mobiles.
Requirements: 2.0 and up. King Player is a clean, simple music player.
* Multi Dynamic Surround System (MDSS)
* Support for all common audio formats (MP3, OGG, FLAC, PCM)
* Tag based and folder based navigation
* Support for android playlists
* No ads
* Advanced widgets
* HQ music, Stereo expansion, mono mixing, balance, Full bass ,equalizer